Do telegram alerts use credits too? I was not expecting them to as they were unmeterd previously on the ‘free’ plan.
Indeed 1 Telegram alert = 1 credit.
To put this in perspective: if your application sends a Telegram alert every hour and you have 5,000 credits, you could send free alerts for 7 months. On top of that, you could request more free credits in this link: https://app.ubidots.com/userdata/plans/
Alternatively, you could recharge $5 per thousand credits, which means the price per alert is $0.005, or half a cent.